Forked connecting-rod.



H. B. LAYMAN.

FORKED CONNECTING ROD. APPLICATIONFILED APR.24| 1915.

1, 1?,30Q 1 Patented Mar. 21, 1916.

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HEEZRON 1B,,LAYMAN, on NEW YORK-N. Y.

'00., me, on new roman. Y.,

, nssieivon TO THE LAYMANrREssED R015 A CORPORATION or NEW YORK.

FORKED CONNECTING-ROD.

To all whom z'tma'y concern: 5 l

Be it known that L'HEBRON B. LAYMAiv,

a citizen of the United States, and residing at New York. in the countyof New York and State of New York, have invented certain new and usefulImprovements Forked Connecting-Rods, of which the following is aspecification, such as will enable those skilled in the art to which itappertains to make and use the same.

This invention relates to connecting rods and particularly to devices ofthis class'used in connection with what are known as motor cyclevehicles in which two cylinders are employed and. two connecting rodsthe larger ends or heads of which are also connected, one workingwithin-the other; and

the-object of the invention is to facilitate, simplify and cheape'n themanufacture of devices ofthis class while at the same time "renderingthe same more light and durable line 2+2 of Fig. 1; Fig. 3 a viewsimilar to than, as usually constructed; and with this and other objectsin view the invention con-' sists in connecting rods-of the classspecified,

constructed and operating as hereinafterdescribed and claimed;

The invention is fully. disclosed in the following specification, ofwhich the ,accompanying drawing forms a part, in which the separateparts of my improvement are designated by suitable reference charactersin'each of the views, and in-which:

. Figure 1 is a Side View showing a pair of connecting rods made.accordingto ny invention, the smallerjend'of oneof said rods beingbroken away; Fig. 2 a section on the Fig. 1 but showingone sideportionof one of the rods removed; Fig. 4 aview looking in the directionof the arrow4 in'Fig-l; Fig. 5 a transverse section of one of the rodson the line 5.5 of Fig; 1 and,- Figs. 6 and fied forms.

portions (1 andb and the rod (1 is also provided with a smaller end orhead port on a as is also therod b,'but the smaller endor head portionof the rod 6 is not shown, and for the purpose of this specification theSpecification of Letters Patent.

PatentedMar. 2t, 1916. Application fl ed-A ril 24, 1915. S,eria1No.23,728.

rods a and. bjmay be called main and sup- 'pleinental rods respectively;v

It will he: understood, of course, that the larger ends or smaller endor head portion a and' the shank portion of said. rodis preferably ofbut may be'of the form shown inFigsJB and 7, or of any preferredtransverse sectional shape, and the separate parts of the "shank portionand of the smaller end or head .portion are welded together and finishedso that the said shank portion and smallerend or head portion will showno seam or seams.

head portions-of-the-rods a and b-connect, in practice, with thecrankshaft of the motor while the smallerends or v The road a or theshankflthereof is'com- I which is provided with a half of the larger endor head portion a ,"and a half of the the form, shown in cross. sectionin" Fig. 5, v

The larger end or head portion a of the t v rod a is 'circula-rin formviewed as in Fig. 1, but is divided into two similar parts: when viewedin section at right angles to the central aperture a thereof, and t'hehead b of the rod b'fitsbetween theseparate parts of the head a of therod a, is provided'in one top side portion thereof with an aperture orthrough which the head 12 is passed into the head (1 and theaperture a-is formedv by expanding the side portions of the head a The separateside portions of the head a are also provided aroundthe central aperturea with projectingflanges or rims at within whichare preferablyplaced'and secured by welding or other means supple- I 1 mental sleevebearings c and the side and 7 viewssimilar .to Fig. 5 but showingmodibottom portions of the head a opposite the 7 g erture a are providedwith a central cir- In carrying my invention into effect I- provide twoconnectingrods a and 6 provided respectively with larger ends or headcumferential. T-shaped flange a formed partly in connection with oneside portion.

andsaid head a The smaller endor'head portion c of the 5 rod a isprovided with a circumferential flange orrim a which is T-shaped-incrossforms annular grooves (1 aroundthe outer side portions of said head andwhich com- 'municate with and are continuous with longitudinal grooves ain the opposite sides of the shank a of said rod.

In the construction shown the rod 6 is 7 made in the same manner as therod a in all respects, except as to the larger end or head portion 6said head portion b jconsistmg of two similar side portions having deepannular grooves 72 and the central'aperture therein being provided witha supplemental sleeve bearing 0 similar to. and registering with thesleeve bearings c in the separate side portions of the head a of the roda.

From the foregoing description it will be seen that the head a of theroda consists of a circular annular and inclosed box intowhich the headI)? of the rod 6 is inserted through the aperture a, in one top sideportion of the head a'', and each of the rods 0: and b is free to rotateon the crank shaft in the usual manner, the aperture a? being sufficiently large to permit of the necessary movement of the head b of therod 6, and while I have described the separate parts of the rod a asstamped from sheet metal, my invention is not limited to'this method ofmaking said parts and the same may be cast, if desired, but the processof stamping out said parts from sheet metal is preferred by reason ofthe fact that the machining,

grinding, or other finishing of the inner sides or surfaces of theseparate parts of the head a in order to avoid friction, and which isnecessary when said parts are cast, is unnecessary when said parts arestamped from sheet metal, and this facilitates, simplifies and cheapensthe manufacture of the rod or rods, to a large degree, and this alsoapplies to the construction of the rod 6 as well as to the rod a, andwhile I have shown and described the preferred inanner ofprocedure inthe manufacture of my improved connecting rod device or devices, myinvention is not limited to the details herein shown and described, andchanges therein and modifications thereof may be made, within the lscope of the appended claims, without de parting from the' spirit of myinvention or sacrificing its advantages.

Having fully describ (1 my invention,

what I claim as new and desire to secure by Letters Patent, is

- 1. A connecting rod two rods, the larger 'endiportion of-one rod,comprising an annular box member provided in one top sideportionthereof-with' device consisting of an aperture through which thelarger end of the otherrod is inserted. i

2. A connecting rod device comprising main and supplemental rod members,the

vided with a crank shaft aperture, the head of the main rod member beingprovided in one top side portion thereof with an apervided in one topside portion thereo with an aperture through which the head of thesupplemental rod member is passed, and the 'sides of the head of themain rod member being provided with outwardly directed flanges aroundthe central, crank-shaft, aperture therein, and said flanges and the.head of'the supplemental rod member being provided with supplementalsleeve bearings arolmd said aperture.

4:. A crank rod device, comprising main and supplemental rods, the mainrod conture through which the head of the su plesisting of two similarsheet metal side mem- -4 bers and the larger end thereof being ofcircular and box-shaped form and being pro- ,vided in one top sideportion thereof with an aperture through which the larger end of thesupplemental rod is inserted, saidlarger end of the supplemental rodbeing inclosed in the larger end of the main rod.

5.. A crank rod device, comprising main and supplemental rods, the mainrod consisting of two similar side sheet metal parts and the larger endthereof being of circular and boxshaped'form and being provided in onetop slde portion, thereof with an aperture through which the larger endof the supplemental rod is inserted, said larger end I of thesupplemental frod being inclosed in the larger end of the main rod, andthe side portions of the larger end of the main rod being provided withoutwardly directed flanges around the 'crank-shaft "aperture "therein."

6. A crank rod device, comprising main and supplementalrods, the mainrod consistlng of two-similar side sheet metal parts and the larger endthereof being of circular and box-shaped form and being provided in onetop side portion thereof with an gaperture through which the larger endof the supplemental rod is inserted, said T largerend of thesupplemental rod being entirely inclosed thelarger end of the main rod,and the .s1de portions vof the larger end of the main rod being providedwith outwardly directed flanges around the crank-shaft aperture therein,and one side and the bottom part of said larger end of the main rodbeing also'provided with a central circumferential T-shapedrim member.

7. A connecting rod device, comprising main and supplemental rodmembers, the main rod member being provided with an annular box-shapedhead which incloses the head of the supplemental rod member, the head ofthe main rod member being also provided in one top sideportion thereofwith an aperture through which the head of the supplemental rod memberis passed and in which the shank of the supplemental rod memberoperates.

8. A connecting rod device, comprising main and supplemental rodmembers, the main rod member consisting of parts permanently securedtogether. and splayed at the larger end 'to receive the larger end ofthe supplemental rod member.

9. A connecting rod device, comprising main and supplemental rodmembers,the main rod member being composed of a plu:

rality of parts permanently secured together and spread at the crank endto form a fork between the tines of which the supplemental head of thesupplemental rod member and the separate parts of said rod members beingpermanently secured together throughout the length of the rod.

In testimony that I claim the foregoing as my invention I have signed myname in presence of the-subscribing witnesses this 23rd day of April,1915.

HEBRON B. LAYMAN.

Witnesses:

C. MULREANY, H. E THOMPSON.

